This book examines the training and supervision of psychotherapists, with a focus on psychotherapy efficacy and key issues facing psychotherapy training programs today. While some therapists are more effective than others, good training and supervision can provide all clinicians with the skills and tools to become effective practitioners. Considerable research has shown the broad efficacy of psychotherapy, but there are still many clients who do not fully benefit from therapy, some who don't benefit at all, and even some who get worse as a consequence of therapy. The overall goal of training and supervision, and efforts to study these practices, should be to enhance the current degree of effectiveness that has been reached in psychotherapy. This book offers innovative knowledge on how to better understand and improve training by relying on the reflections, research discoveries, and collaborative work of psychotherapy scholars who represent a diversity of theoretical orientations, methodological expertise, and levels of experience.